This is a simple textured washcloth (dishcloth) using only knits and purls. The cactus is centered on the washcloth but is asymmetrical.

I included Euphorbia in the name of this pattern here on Ravelry to distinguish it from others by including the Genus of the cactus we typically think of when conjuring a generic image of a cactus. And since I teach in a biology program, this seemed appropriate.